Please use the Python Language, preferabally 2.7, to solve this two probem set a

Question

Please use the Python Language, preferabally 2.7, to solve this two probem set about while loops. The parameters and answer template for the solution is also given beneath the problem descriptions.

#PROBLEM 1
def pair(l1):

    list1 = l1
    
    return 0
    
    #YOUR CODE GOES HERE (indented)

    return l1
    #END YOUR CODE

    
#PROBLEM 2
def replace(l1,l2):
    string1 = l1
    string2 = l2

    #YOUR CODE GOES HERE (indented)

    return string1
    #END YOUR CODE     

Problem 1: Write code that pairs together every other number in a list. For example, the list [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] would yield ["1,3", "5,7", "9"]. You may not use any built-in functions/methods besides len() and .append(). Problem 2: Write code that a string from the user and a letter, and returns a new string where each instance of the letter becomes a Q. For example, happybirthday and a yield the result hQppybirthdQy

Explanation / Answer

1.

def pair(l1): #function pair
    list1 = l1 #creating temperory variable to store store list
    l1 = []   #assigning list to null
    i = 0 #variable to represent index of the list
    while i<len(list1): #for looping through entire loop
      if i < len(list1)-2: #if there are 2 elements to pair
        s = str(list1[i]) + ',' + str(list1[i+2])
      else: #if there are no two elements to pair
        s = str(list1[i])
      l1.append(s) #appending the variable to the list
      i += 4 #incrementing array index by 4
    return l1 #returning list
    #END YOUR CODE
print pair([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) #calling the function

output:

2.

def replace(l1,l2):
    string1 = l1 #temperory variables for mofidification
    string2 = l2
    i = 0 #initializing index to zero
    while i < len(l1): #looping through the loop
      if string1[i] == string2: #if the character is equal to the second passed character
        string1 = string1[:i] + "Q" + string1[i+1:] #replacing the charcter if condition satisfies
      i += 1 #incrementing loop by 1
    #YOUR CODE GOES HERE (indented)

    return string1 #returning string
    #END YOUR CODE
  
s = raw_input("Enter String")
c = raw_input("Enter character")
print replace(s,c) #calling function

output:

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---